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Which one of the following pairs of animals is similar to each other pertaining to the feature stated against them?
| 1. | Garden lizard and Crocodile - Three-chambered heart |
| 2. | Ascaris and Ancylostoma - Metameric segmentation |
| 3. | Sea horse and Flying fish - Cold-blooded (poikilothermal) |
| 4. | Pteropus and Ornithorhyncus - Viviparity |
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